User`s Manual Template

User`s Manual Template
USER’S
MANUAL
C11GS- MULTIFUNTCION CNC BOARD
Rev. 1.5
JANUARY, 2015
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User’s Manual
Page i
USER'S MANUAL
TABLE OF CONTENTS
Page #
1.
OVERVIEW ......................................................................................................................... 1
2.
FEATURES ......................................................................................................................... 1
3.
SPECIFICATIONS .............................................................................................................. 3
4.
BOARD DESCRIPTION ...................................................................................................... 4
5.
SPECIAL FUNCTIONS ....................................................................................................... 5
6.
7.
8.
5.1
Safety Charge Pump “SCHP”. (Pin 17) ...................................................................... 5
5.2
Variable Speed Control. (Pin 14 and 16) .................................................................... 6
5.3
Electromechanical relays. (Pin_1 or Pin_17) ........................................................... 11
5.4
Using the COM configuration jumper. ...................................................................... 11
5.5
External Enable Pin. ................................................................................................... 12
FUNCTIONAL BLOCK DIAGRAMS ................................................................................. 12
6.1
Outputs 2-9 simplified functional block diagram ..................................................... 12
6.2
Outputs 1, 14, 16 and 17 simplified functional block diagram ................................ 13
6.3
Input simplified functional block diagram ................................................................ 13
6.4
Selection Jumper PULL-UP or PULL-DOWN ............................................................ 14
WIRING DIAGRAMS ........................................................................................................ 14
7.1
Connecting Switches or push button. ...................................................................... 14
7.2
Connecting NPN sensors. ......................................................................................... 15
7.3
Connecting PNP sensors. .......................................................................................... 17
7.4
Other connection........................................................................................................ 18
DIMENSIONS ................................................................................................................... 19
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User’s Manual
Page ii
1. OVERVIEW
This card has been designed to provide a flexible interface and functions to your
computer projects by using the parallel port or USB-based or Ethernet-based controller.
This board comes as a response to many customers that have been asking for a faster
way to connect devices and reduce the possibility of wiring errors.
2. FEATURES
 IEEE 1284 Standard compatible
Includes the circuitry recommended by the IEEE 1284 Level 1 standards for
bidirectional parallel communications between personal computers and peripherals.
 PULL-UP or PULL-DOWN selection for inputs
Includes jumpers to select the best input configuration for your application
 Buffered inputs and outputs. Outputs are buffered through the use of high speed
and high current buffers allowing the card to output the signals without using the
power from the parallel port. It can take the +3.3 or +5vdc signal from the parallel
port and deliver solid +5vdc at 24 milliamps.
 Microcontroller based SCHP
This board comes with a microcontroller that allows the implementation of a
complex algorithm for sampling and analyzing the SCHP signal.
 Built-in Variable Speed Control.
It has an optoisolated analog 0- 10VDC output that will convert a PWM signal into
an analog signal that can be used to command a commercial VFD. This analog can
be adjusted using an on-board potentiometer, so this board can be adjusted to other
voltages.
 3 Electromechanical Relays with NO and NC positions.
Mechanical relays are very flexible because they can be used for AC or DC and
come with NO and NC (Normally Open and Normally Closed) positions.
 Status LEDs on all inputs and output connections.
No more guessing. You can SEE all your signals. Save valuable time and
brainpower for CNCing. To avoid remaining current to the main load (driver or other
device), all the indicator LEDs are driven by independent buffers of the ones that
drive de output.
 Output pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 16 and 17.
User’s Manual
Page 1
 Input pins 10, 11, 12, 13 and 15.
 Input and output pins close to ground or +5vdc connections
 Common terminal for pins 2-9 can be ground or +5vdc. Forget about grounding
problems. Easily connect your pin by using your close by ground connection. No
need to be an electronics expert to ground all your stuff. The board has a jumper
that allows you to select if the common terminal to pins 2-9 will carry a ground or
+5vdc. So if you are connecting encoders or proximity switches, you can select it to
ground. If you are connecting Gecko drives or limit switches, you can set It to be
+5VDC.
 External Enable Pin (EN). The board has a pin that allows you to enable/disable all
the outputs at once. The board requires +5vdc in the EN pin. If it is not present, it
will send all the outputs to ground. You can use this to enable or disable the system
manually, or you can install an external Safety Charge Pump or other external
safety monitoring device.
 Works directly with popular CNC hardware and software. Such as Gecko drive
or Leadshine, and parallel port control software, such as mach2, Linux EMC, Turbo
CNC, and others. (Not all tested).
 All TTL 5VDC signals. Interface directly with parallel port interface products and
other CNC4PC cards. 5VDC (TTL) cards are very common among automation
devices.
 Screw-On connections for all terminals. You only have to screw-on the wires to
make all your connections.
 All pins can be used in a concurrent manner.
You can use all the input or output pins in a concurrent manner. For example, if you
are using output pin #1 to control the Built-in Electromechanical Relay, you can also
access that signal from the output pin on the board or from the DB25 connector for
output. Each connection will not affect the other current from the other connection.
User’s Manual
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3. SPECIFICATIONS
DIGITAL INPUT SPECIFICATIONS
On-state voltage range
2 to 5V DC
Maximum off-state voltaje
0.8V
Maximum operation frequency
4 MHz
Typical signal delay
10nS
DIGITAL OUTPUT SPECIFICATIONS
(5V power supply voltage) +
Maximum output voltage
0.5V
Typical output current
24mA
Maximum off-state voltaje
0.44 V
Maximum operation frequency
4 MHz
Typical signal delay
10 nS
Time of transition to high impedance state
12 nS*
*Time passed since a low in the ENABLE input is detected and the outputs are disabled
Requirements:
It requires a 5VDC @ 1000 milliamps power supply to operate.
WARNING
Check the polarity and voltage of the external power source and connect the 5V
and GND. Overvoltage or reverse-polarity power applied to these terminals can
cause damage to the board, and/or the power source.
User’s Manual
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4. BOARD DESCRIPTION
User’s Manual
Page 4
5. SPECIAL FUNCTIONS
5.1
Safety Charge Pump “SCHP”. (Pin 17)
This board takes advantage of Mach ability to send a specific frequency through one of
the pins of the parallel port when the program is in control of the system. CNC
machinery can be very dangerous, and you could have a risk of the machine doing
something different that what you intend the machine to do if the program loses control
of your system. Mach be can be programmed in a way, so when it is “in control”, it
delivers a 12.5 KHz signal through one of the pins. This card lets you use this signal to
work as an On/Off switch for your system, enabling a powerful safety system for your
equipment. If you ever had windows crash on you, then this card is for you. The port
can also do weird things while the system is coming up, or down.
For Configuring the Charge Pump in Mach X: Use the dialog Config / Ports and
pins / Output Signals. Enable the Charge Pump output and configures it as is shown in
the Fig. 8 Next, press the apply button.
Charge Pump configuration
User’s Manual
Page 5
Selecting the SCHP operation mode
The Safety Charge Pump can be activated or deactivated depending on the jumper
position
1-2: SCHP OFF
2-3: SCHP ON
Note: When the Safety Charge Pump is activated, the EN terminal is active and a valid
SCHP signal is present, pin 17 will go high. This high signal can be used to enable
other external devices, such as enabling other Breakout Boards, or relays that would
enable servos, VFDs, contactors etc….
5.2
Variable Speed Control. (Pin 14 and 16)
This function lets you control your spindle with PWM signal. It converts the PWM signal
into an analog (0-10VDC).
This function can also be used on many DC motor controllers by replacing the
potentiometer that controls the speed.
Requirements:
It requires a power supply external [email protected] 30mA for the analog output
WARNING: To keep the output signals optoisolated, these must not have
common ground or connections to current with other circuits you are using.
You will require a voltmeter to fine tune your system.
Wiring:
Before connecting anything, please be sure to read your VFD’s manual and make sure
you understand all the safety issues.
User’s Manual
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Operation Mode Jumper
This jumper allows selecting the way how the relays go to be activated when a PWM signal and
REV signal are present in the inputs terminals. See the tables below.
MODE - US
US MODE (US)
INPUTS
PWM (Pin 14)
ON
ON
OFF
OFF
REV(Pin 16)
ON
OFF
ON
OFF
RELAYS
REL 1
OFF
ON
OFF
OFF
REL 2
ON
OFF
OFF
OFF
MODE - INT
INTERNATIONAL MODE (INT)
INPUTS
PWM (Pin 14)
ON
ON
OFF
OFF
REV(Pin 16)
ON
OFF
ON
OFF
RELAYS
REL 1
ON
ON
OFF
OFF
REL 2
ON
OFF
ON
OFF
Relay 1 and 2
They can be used to control the VFD. The relay specification are shown in the below
table.
ELECTROMECHANICAL RELAYS SPECIFICACTIONS
Maximun Current (AC)
[email protected]; [email protected]
Maximun Current (DC)
[email protected]; [email protected]
Electromechanical Relays Specifications
User’s Manual
Page 7
Configuring the Control Software:
It is strongly recommend you read your control software’s manual. You need to
configure your control software to control the spindle as if it was an angular axis. This
card requires a PWM input signal to deliver 10VDC. So you have to set the speed of
the motor (spindle) at maximum. For acceleration values adjust them to where you feel
comfortable. Keep in mind the acceleration of the motor must also be set in your VFD.
For configuring Mach follow these steps:
1. Go to Config / Ports &Pins / Motor Outputs. Enable the spindle and select the port and
pins you wired for step and direction.
Ports & Pins configuration screenshot
2. Go to Config / Ports &Pins / Spindle Setup. In the motor control box, check Use Spindle
Motor Output and Step /Dir Motor. Under Pulley Ratios set the pulley ratios of the
machine.
User’s Manual
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Spindle Setup screenshot
Go to Config / Motor Tuning / Spindle. On Steps per unit put 1,000, set velocity to maximum.
For Acceleration, choose the acceleration that you feel comfortable with. Start slow,
increase acceleration as you test your system. Under Step Pulse length, use a number from
3 to 5, but start with 3. This number is directly proportional to the final voltage you will get in
the analog output. Use this number and the fine tuning pot to adjust the voltage you want to
get at max speed.
Motor Tuning and Setup screenshot.
After configuring the Mach, these steps should be followed.
User’s Manual
Page 9
Replacing a Potentiometer:
This circuit can be used to replace a potentiometer of DC
motor speed control circuits. This speed controller circuits
are very commonly used by SIEG, KB Electronics, and
many other oriental machines. Before explaining how to do
it, please first keep in mind that it can be done if the voltage
that goes though the pot is +12vdc or less. This circuit
cannot be used for AC currents.
In most cases the terminals that go to the potentiometer will
carry these signals:
P1 = GND
P2 = WIPER
P3 = REFERENCE VOLTAGE
These are the steps for replacing a potentiometer:
1. Measure the voltage difference between P1 and P3. Make
sure it measures under +12vdc.
2. Fine tune the analog output to the output voltage you got from step 1.
3. Connect the ground from the analog output to the ground of the potentiometer
(P1).
4. Connect the analog output to the wiper connection of the potentiometer (P2).
After configuring the Mach, these steps should be followed.
Step 1 Ensure that all external power sources are set to OFF.
Step 2 Connect the power supply to the Power Inputs Connectors (X1).
Step 3 Turn on the external supplies
Step 4 Connect a voltmeter in the analog outputs
connectors (X2) and make and fine tune this output:
Make sure that when you reach the max
speed in the control software you get 10VDC out
(X2). This voltage can vary depending on many
things, including the electrical properties of
parallel port or breakout board you are using, the
length of the step pulse your software is
delivering, and the normal hi or low status of your
step pin. Play with the pot, hi/low status of the pin,
and pulse length to fine tune the output voltage.
User’s Manual
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5.3
Electromechanical relays. (Pin_1 or Pin_17)
This RELAY is activated with the PIN_1 or PIN_17, set jumper as sample in the image.
PIN_1
PIN_17
Mechanical relays are very flexible because they can be used for AC or DC and come
with NO and NC (Normally Open and Normally Closed) positions. The relay
specification are shown in the below table.
ELECTROMECHANICAL RELAYS
SPECIFICACTIONS
[email protected];
Maximun Current (AC)
[email protected]
[email protected];
Maximun Current (DC)
[email protected]
Electromechanical Relays Specifications
5.4
Using the COM configuration jumper.
This is for selecting the value to get at the COM terminals found next to step and
direction terminals (Pin 2-9). Some drivers expect a ground, and others expect +5vdc.
There is a jumper (X7) that allows you to select +5VDC or GND for the COM pins.
1-2: COM= 5V
User’s Manual
2-3: COM= GND
Page 11
5.5
External Enable Pin.
The card must be provided with a 5VDC signal to enable
operation. This feature has been added to externally control the
status of the outputs. An external switch or a Safety Charge
Pump can be added to provide the enabling signal. When the
enable signal is not present, output signals sent high impedance
state. If this function is not required, an jumper can be placed
between +5vdc and the EN terminal. It has an internal 4.7kOhm
pull-down resistor.
WARNING: This card must have the power supplied while it is connected to the
PC. If power is removed to the card while it is connected to the PC, noise can be
introduced to the output lines. This can create a dangerous situation as relays or other
devices that might be connected to this card could get activated.
6. FUNCTIONAL BLOCK DIAGRAMS
6.1
Outputs 2-9 simplified functional block diagram
Simplified functional block diagram for the outputs 2-9
Parallel Port coupling is done following IEEE 1284 standard recommendation. The
indicator led is driven by a different buffer.
User’s Manual
Page 12
6.2
Outputs 1, 14, 16 and 17 simplified functional block diagram
7.
Simplified functional block diagram for the outputs 1, 14, 16 and 17
Note: “Internal Enable” = “External Enable Pin” AND (“SCHP” OR “Bypassed SCHP”)
The “Internal Enable” is the result of an AND Operation between the “External Enable Pin” and
the SCHP operation mode selected by the user.
Note: All Outputs will be deactivated if the board is not connected to the PC parallel
port.
6.3
Input simplified functional block diagram
Simplified functional block diagram for the inputs
User’s Manual
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6.4
Selection Jumper PULL-UP or PULL-DOWN
Pins 10,11,12,13 and 15 can be set to pull-up or pull-down by selecting the jumper in the
appropriate position.
The input pins can be set to be pulled up or down with a 4.7Kohm resistor.
1-2: PULL-UP
2-3: PULL- DOWN
7. WIRING DIAGRAMS
While this board supports only TTL +5VDC signals, different kind of sensors, switches
using different voltages can be connected using the diagrams that follow:
Note: The below wiring diagrams are an example, any input can be used for the connections.
Note. The bellow wiring diagrams require setting the inputs to use pull-down resistor.
7.1
Connecting Switches or push button.
Wiring diagram to connect switches
User’s Manual
Page 14
7.2
Connecting NPN sensors.
Wiring diagram to connect NPN open collector proximity sensors
Wiring diagram to connect in parallel NPN open collector proximity sensors
Connecting NPN open collector proximity sensor with
the C11GS
User’s Manual
R1 Value (12V)
R1 Value (24V)
Aprox. 10KΩ
Aprox. 25KΩ
Page 15
Wiring diagram to connect NPN proximity sensors with internal pull up resistor
Some NPN proximity sensor has a pull-up resistor (R1) internally. It is necessary to
know its value in order to connect safely the sensor with the BOB. Follow this
recommendation:
Connecting NPN open collector proximity sensor with the C11GS
(R1+R2) Value (12V)
(R1+R2) Value (24V)
Aprox. 10KΩ
Aprox. 25KΩ
Calculating the R1 value
Note: Rx is the unknown resistor value.
RX = VEX. (R/V) - R
User’s Manual
(1)
Page 16
Where:
VEX is the external power supply voltage
V is the voltage across the R resistor
An external resistor and a voltmeter are required to calculate the internal resistor (Rx) value.
Note. The user should know the R value to do this operation. A 4.7KOhm @ 1/2W is
recommended.
SAMPLE: if you are using a 12V power supply (VEX), and using a 4.7KOhm as external
resistor (R), then the voltage across R should be 6V, using the equation 1, the Rx value is
4.7KOhm.
7.3
Connecting PNP sensors.
Wiring diagram to connect PNP proximity sensors
Connecting PNP proximity sensor with the C11GS
User’s Manual
R Value (12V)
R Value (24V)
Aprox. 10KΩ
Aprox. 25KΩ
Page 17
7.4
Other connection.
Other connections can be implemented by setting the inputs to pull-up resistor.
Wiring diagram to do an “Auto Tool Zero”
http://cnc4pc.com/Tech_Docs/E_STOP_N_EN_Wiring.pdf
http://cnc4pc.com/Tech_Docs/E_STOP_N_SCHP.pdf
User’s Manual
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8. DIMENSIONS
All dimensions are in Millimeters
DISCLAIMER:
Use caution. CNC machines can be dangerous machines. Neither DUNCAN USA, LLC
nor Arturo Duncan are liable for any accidents resulting from the improper use of these
devices. This board is not a fail-safe device and it should not be used in life support
systems or in other devices where its failure or possible erratic operation could cause
property damage, bodily injury or loss of life.
User’s Manual
Page 19
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